6KM5:
reference: Structural insights into the effect of active-site mutation on the catalytic mechanism of carbonic anhydrase., Kim JK, Lee C, Lim SW, Andring JT, Adhikari A, McKenna R, Kim CU, IUCrJ. 2020 Sep 9;7(Pt 6):985-994. doi: 10.1107/S2052252520011008. eCollection, 2020 Nov 1. PMID: 33209313

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).